Conducting studies on the diagnosis and sources of infection for leptospirosis in carnivores and ruminants. Juan-Sallés C, et al: Chronic leptospirosis in an Asiatic water buffalo (Bubalus arnee) and preliminary survey for Leptospira infection in captive nondomestic ruminants at a suburban zoo. Veterinary Pathology 38: 577, 2001. Juan-Sallés C, et al: Leptospirosis in a Mexican grey wolf (Canis lupus baileyi) and survey for Leptospira infection in captive carnivores, local free-ranging wildlife and feral animals at Africam Safari, Puebla (México). Proceedings AAVLD, 2001, p. 69.